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Thermal insulation joint mixture and laying method thereof

A technology of caulking agent and adhesive, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problem of unsatisfactory heat insulation effect at the gap, affecting the heat insulation effect of the heat insulation layer, and the gap filling is not dense enough, etc. problems, to achieve the effect of saving assembly time, excellent heat insulation performance, and easy operation

Active Publication Date: 2015-02-18
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, patent ZL200810046400.0 (thermal insulation sealant) and CN201210402046.7 (thermal insulation elastic sealant) are both used for building wall bricks and have heat insulation effect, but this type of sealant is not resistant to high temperature and can only Use at room temperature
[0003] With the development of supersonic aircraft, the external aerodynamic heating environment of the aircraft is harsh, and certain thermal protection must be carried out for the aircraft. Due to the complex internal structure of the aircraft, multiple metal parts and instruments are installed, and the heat insulation layer is installed inside the aircraft. The block method must be used, resulting in a large number of gaps between the insulation layers. If these gaps are not specially treated, they will become heat flow paths that directly heat the air in the cabin, affecting the overall insulation effect of the insulation layer.
At present, flexible pads are used for the gaps between the heat insulation layers of aircraft. However, due to the uneven size of the gaps, limited by the specifications of the flexible pads, the gaps are not filled densely enough, and the density is not easy to control. Therefore, the heat insulation effect of the gaps is not ideal.

Method used

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  • Thermal insulation joint mixture and laying method thereof
  • Thermal insulation joint mixture and laying method thereof
  • Thermal insulation joint mixture and laying method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Preparation Process:

[0050] (1) Mix the KH-CL-RTV silicone rubber adhesive component with cyclohexane evenly, then add polyacrylonitrile pre-oxidized wire and aluminum oxide hollow microspheres into the silicone rubber adhesive that is stirred evenly, and stir evenly. The mass ratio is: KH-CL-RTV adhesive: cyclohexane: polyacrylonitrile pre-oxidized wire: aluminum oxide hollow microspheres = 100:50:50:50, after 24 hours of post-treatment at 50 ° C, the heat insulation sealant is obtained Component A: the diameter of the polyacrylonitrile pre-oxidized wire is 5 μm, and the length is 5 mm; the diameter of the aluminum oxide hollow microsphere is 50 μm.

[0051] (2) Mix the KH-CL-RTV silicone rubber adhesive curing agent component and cyclohexane evenly, and the mass ratio is 10:100 to obtain component B of the thermal insulation sealant.

[0052] (3) Clean up the gaps, and spread the gaps evenly with the evenly stirred two-component KH-CL-RTV silicone rubber adhesive. ...

Embodiment 2～15

[0061] Table 1 shows the raw materials used in the B component of the heat-insulating caulking agent and its preparation ratio in Examples 2-15, and Table 2 shows the raw materials used in preparing the A-component of the heat-insulating caulking agent in Examples 2-15 and its preparation ratio. Table 3 is Embodiments 2-15 laying process and performance test of heat-insulating sealant material, and other contents are the same as embodiment 1.

[0062] It can be seen from Table 3 that as the content of fibers and functional materials in component A of the thermal insulation sealant increases, its thermal insulation performance is better. Within the optimal proportion range, the back temperature after heating at 350°C for 700s is lower than 60 ℃.

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Abstract

The invention provides a thermal insulation joint mixture and a laying method thereof. High-temperature-resistant anti-radiation fiber, a functional material and a high-temperature-resistant silicon rubber adhesive are adopted, wherein the high-temperature-resistant anti-radiation fiber is prepared by polyacrylonitrile pre-oxidized fiber and has high-temperature resistance, anti-radiation and enhancement functions; the functional material can prevent heat flow from being transferred into an aircraft; and the high-temperature-resistant silicon rubber adhesive adopts a room-temperature curing adhesive which can be used at the temperature of 350 DEG C or higher temperature, and has high-temperature resistance and adhesion functions.

Description

technical field [0001] The invention relates to a thermal insulation caulking agent and a laying method thereof, belonging to the technical field of functional composite materials. Background technique [0002] A caulk is a material used to fill gaps, typically in the construction industry. For example, patent ZL200810046400.0 (thermal insulation sealant) and CN201210402046.7 (thermal insulation elastic sealant) are both used for building wall bricks and have heat insulation effect, but this type of sealant is not resistant to high temperature and can only Use at room temperature. [0003] With the development of supersonic aircraft, the external aerodynamic heating environment of the aircraft is harsh, and certain thermal protection must be carried out for the aircraft. Due to the complex internal structure of the aircraft, multiple metal parts and instruments are installed, and the heat insulation layer is installed inside the aircraft. The block method must be used, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J11/08C09J11/04
Inventor 赵小玲邹军锋詹万初艾素芬隋鹏简文政张继承丁颇
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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